9641217247 has 2 divisors, whose sum is σ = 9641217248. Its totient is φ = 9641217246.

The previous prime is 9641217241. The next prime is 9641217251. The reversal of 9641217247 is 7427121469.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9641217247 - 2¹⁵ = 9641184479 is a prime.

It is a super-5 number, since 5×9641217247⁵ (a number of 51 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9641217241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4820608623 + 4820608624.

It is an arithmetic number, because the mean of its divisors is an integer number (4820608624).

Almost surely, 2^9641217247 is an apocalyptic number.

9641217247 is a deficient number, since it is larger than the sum of its proper divisors (1).

9641217247 is an equidigital number, since it uses as much as digits as its factorization.

9641217247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 9641217247 is about 98189.7003101649. The cubic root of 9641217247 is about 2128.3544526326.

The spelling of 9641217247 in words is "nine billion, six hundred forty-one million, two hundred seventeen thousand, two hundred forty-seven".